[SciPy-Dev] how to multiply an instance of ndarray and an object?

[Phillip Feldman]

Yes!  It works.  Thanks so much!

On Sat, Mar 24, 2018 at 3:59 PM, Ilhan Polat <ilhanpolat at gmail.com> wrote:

> Yes, you can write
>
> __array_priority__ = 1000 # some number (bigger wins. But against what
> you can never be sure)
>
> or
>
> __array_ufunc__ = None # NumPy 1.13+ only
>
> somewhere in your class and NumPy will leave you alone because this
> overrides its eagerness to handle the vectorization and ending up on object
> data types.
>
>
>
> On Sat, Mar 24, 2018 at 10:02 PM, Phillip Feldman <
> phillip.m.feldman at gmail.com> wrote:
>
>> I have a class called `Signal` that handles multiplication by an array on
>> the right by overloading `__mul__`.  I tried to implement multiplication by
>> an array on the left by overloading `__rmul__`, but wasn't able to make
>> this work because NumPy thinks that it knows how to handle this, so my
>> `__rmul__` method (below) is never called.  The result is an array having
>> dtype `object`.  Is there a practical way to modify NumPy to solve this
>> problem
>>
>> Phillip
>>
>>     def __rmul__(self, c):
>>         S= self.copy()
>>         S.phasors*= c
>>         return S
>>
>> _______________________________________________
>> SciPy-Dev mailing list
>> SciPy-Dev at python.org
>> https://mail.python.org/mailman/listinfo/scipy-dev
>>
>>
>
> _______________________________________________
> SciPy-Dev mailing list
> SciPy-Dev at python.org
> https://mail.python.org/mailman/listinfo/scipy-dev
>
>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://mail.python.org/pipermail/scipy-dev/attachments/20180325/6f27385c/attachment.html>